What are the processes of sintering production? What are the main equipment for sintering production

The extent to which the exhaust gases entering the fan must be required for normal operation.

Are you going to sinter bricks or coal or glass.

Hello dear dear, the sintering workshop is mainly dry: the prepared raw materials (concentrate, mineral powder, fuel, flux, ore return and iron-containing production waste, etc.) are batched, mixed and granulated in a certain proportion to obtain sintered materials that meet the requirements. Sintering in the iron and steel plant is a processing method that provides "concentrate" for blast furnace smelting, and its essence is to prepare various raw materials (concentrate, mineral powder, fuel, flux, ore return and iron-containing production waste, etc.), I hope my help to you, I wish you a happy life!

Sintering refers to the transformation of powdered materials into dense bodies, which is a traditional process.

People have long used this process to produce ceramics, powder metallurgy, refractories, ultra-high temperature materials, etc. The sintering process directly affects the grain size, pore size, and grain boundary shape and distribution in the microstructure, which in turn affects the properties of the material.

Since the 70s of the last century, China's iron ore powder briquetting industry has made great achievements. Before 1970, the models of sintering machines in China were below 75 square meters. After the 70s, especially in 1985, Baosteel introduced 450 square meters of large-scale sintering machine from Japan and put into operation, relying on and organizing the domestic sintering plant to design, produce and manufacture 130 square meters of sintering machine, exhaust ring cooler and more than 20 kinds of corresponding supporting equipment, so that the large-scale sintering machine in China has reached a new level.

During this period, sinter cooling (vibrating cooling and disc cooling) and the addition of primer were tackled, and the production of high alkalinity sinter and thick layer sintering technology was promoted in sintering plants across the country.

The purpose and significance of sintering is to make it denser.

With the rapid development of the iron and steel industry, the natural bonanza of metal filler is far from meeting the requirements of blast furnace smelting in terms of output and quality.

A large number of lean ores can not be smelted by rectal furnaces, but the concentrate powder obtained by beneficiation can only be made into man-made rich ores in the form of blocks by artificial methods for blast furnace use. ObjectiveThe methods for producing artificial rich ore mainly include sintering method and pellet method. The artificial rich ore produced by the sintering method is called sinter, the artificial livestock ore produced by the pellet method is called pellet, and the sinter and pellet are collectively referred to as clinker.

Under the action of a certain high temperature, the surface of some particles is softened and melted, producing a certain amount of liquid phase, and acting with other molten ore particles, after cooling, the liquid phase will hide the ore particles into lumps, this process is called sintering. Obviously, the sintering process is a high-temperature physicochemical reaction.

of the caking process.

Iron ore powder sintering is currently the most important briquetting technology. Due to the production of a large amount of iron ore powder during mining, the regenerative honeycomb ceramics, especially the rich separation of poor iron ore, promote the production and development of iron ore concentrate powder, so that the sintering of iron ore powder has become a large-scale briquetting operation. Its material processing capacity accounts for about the second place in the iron and steel complex (second only to ironmaking production), and the energy consumption meter ranks third after ironmaking and steel rolling, becoming an important production sequence in the modern iron and steel industry.

The sintering of iron ore powder requires that the ore has good physical and metallurgical properties. Due to the large-scale modern ironmaking equipment, the charge is reversed many times and the drop is large, which requires the sinter to have high cold strength, such as compressive strength.

Wait. Sinter undergoes a high-temperature process in smelting It is required to have a certain thermal strength, that is, compression, wear resistance and rapid thermal burst resistance in a high-temperature reducing atmosphere.

Softening, dropletting, etc. The difficulty of iron ore powder sintering technology also lies in the pursuit of reasonable economic effects, therefore, iron ore powder cooking is a technically complex specialized discipline.

Summary. Hello dear <>

The sintered brick equipment includes: crushing equipment (crusher), mixing equipment (single and double shaft mixer), forming equipment (sludge extruder) brick machine, blank cutting machine, mud bar conveyor, billet separator, code blank machine, kiln ferry, kiln ferry, kiln car, conveyor belt and other equipment. In addition, there are power distribution equipment, forklifts for auxiliary production, and so on.

The crushing equipment is responsible for crushing, the mixing equipment is used to stir the raw materials, and the molding equipment is used for molding. Tunnel kiln is a modern continuous firing thermal equipment, which is widely used in the roasting production of ceramic products, and is also used in metallurgical industries such as abrasives. Among them, the latest tunnel kiln designed in Leningrad, Russia, is more advanced.

What are the main equipment for sintering production

Hello dear <>

The sintered brick equipment includes: including crushing equipment (crusher), mixing equipment (single and double shaft mixer), forming equipment (sludge extruder) brick machine, blank cutting machine, mud bar conveyor, billet machine, code blank machine, kiln ferry, kiln ferry, kiln car, conveyor belt and other equipment. In addition, there are power distribution equipment, forklifts for auxiliary production, and so on.

The crushing equipment is responsible for crushing, the mixing equipment is used to stir the raw materials, and the molding equipment is used for molding. Tunnel kiln is a modern continuous firing thermal equipment, widely used in the roasting production of ceramic products, and also used in metallurgical industries such as abrasives. Among them, the latest tunnel kiln designed by the old Görle place in Leningowu, Russia, is more advanced.

What are the main equipment of the sintering plant.

Hello dear <>

Strip throwing furnaces, jet mills, forming presses, sintering furnaces, test and measurement instruments, machining equipment, etc

The advantage of the sintering method is that it can improve the metallurgical properties of the raw material.

Sintering is one of the main methods for briquetting iron ore powder that cannot be directly added to the blast furnace. Through sintering, the metallurgical properties of the raw material can also be improved. Sintering is also applied in the non-ferrous metal smelting process.

The sintering of non-ferrous metal sulfide concentrates, in addition to lumping, also has the effect of desulfurization. Through the transfer of matter, its total volume shrinks, the density increases, and finally it becomes a dense polycrystalline sintered body with a certain microstructure, this phenomenon is called sintering.

Notes:

An important step in the sintering method is that PTFE preforms must be sintered to become a useful product. Sintering is the heating of the preform to a melting point above (327).

And at this temperature for a certain period of time, the polymer molecules gradually change from crystalline to amorphous, so that the dispersed resin particles are bonded into a continuous whole through mutual melting and diffusion. The sintered preform is cooled from a transparent colloidal body into a strong, milky opaque product.

The purpose and significance of sintering is to prepare high-quality metallurgical charges, which has gradually evolved into a way of resource utilization, and the original discipline direction has also expanded from simple sintering pellets to comprehensive utilization of complex ores, short process of direct reduction electric furnace and expert system of sintering pellets.

At high temperature (not higher than the melting point), the green ceramic solid particles bond with each other, the grains grow, the voids (pores) and grain boundaries gradually decrease, through the transfer of matter, its total volume shrinks, the density increases, and finally becomes a dense polycrystalline sintered body with a certain microstructure, this phenomenon is called sintering.

Sintering process:

In the preparation of inorganic solid compounds using solid-phase reactions, the rate of the reaction is controlled by the diffusion process, and higher temperatures are often required for the reaction to proceed efficiently. In addition, some solid compounds are solid-liquid phase compounds, which will decompose when melting, so sintering should generally be carried out below the melting point of the product to ensure a uniform phase.

However, the sintering temperature should not be too low, otherwise the rate of solid-phase reaction will be too low. In many cases, sintering needs to be carried out in a specific atmosphere or vacuum. It is very important to control the partial pressure of the gas phase in the sintering process, especially when the system under study contains ions with variable valence states, and the partial pressure of the gas phase of the solid-phase reaction will directly affect the composition and structure of the product.